
function s1_hello(){
echo "hello,world!"
}
function s2_tell_who_i_am(){
echo "$(whoami)"
}
function s3_which_distro_do_i_use(){
cat /etc/*-release | grep "^NAME"
}
function s4_view_my_cpu_arch(){
uname -m
}
function s5_show_first_scsi_desk_size(){
lsblk -	1 |\grep disk |\grep '^sda' |\awk '{print $4} '| tr -d'G'
}
function s6_show_main_memory_size_in_megabytes(){
free -m | grep "Mem:" |awk '{print $2}'
}
